CN101922824A - Geothermal heat pump system - Google Patents
Geothermal heat pump system Download PDFInfo
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- CN101922824A CN101922824A CN2010101863344A CN201010186334A CN101922824A CN 101922824 A CN101922824 A CN 101922824A CN 2010101863344 A CN2010101863344 A CN 2010101863344A CN 201010186334 A CN201010186334 A CN 201010186334A CN 101922824 A CN101922824 A CN 101922824A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
Abstract
A geothermal heat pump system comprises at least one heat exchange unit and a ground loop communicating with fluid of at least one heat exchange unit. The ground loop comprises a feeding part and a discharge part, wherein at least one heat exchange unit conveys heat exchange fluid to the feeding part and the circulated heat exchange fluid returns to at least one heat exchange unit via the discharge part. The ground loop comprises at least one fluid loop formed by a pipeline, which is arranged to limit a plurality of vertical coils which, laterally separated, are below a foundation base plate of a building structure and are imbedded in the soil.
Description
Technical field
The present invention relates in general to the underground heat heating, and is specifically related to a kind of geothermal heat pump system, a kind of building structure and a kind of method that the ground loop of geothermal heat pump system is installed in conjunction with described geothermal heat pump system.
Background technology
Natural difference between the temperature of the earth of geothermal heat pump system utilization below ground surface and the temperature of the air above the ground surface produces the hot activation force of the operation that is used for heat exchange unit, and described heat exchange unit is operated the climate inside (climate) that is used to control building structure etc. then.Because geothermal heat pump system partly depends on the fact of natural energy resources, geothermal heat pump system is regarded as a kind of the substituting or replenishing close friend aspect the environment such as stove and air-conditioning of traditional heating and refrigeration system usually.
Traditional geothermal heat pump system comprise with so-called ground loop, be embedded in the heat exchange unit that underground pipeline loop fluid is communicated with.Heat-exchange fluid cycles through the ground loop such as water/ethylene glycol mixture, during this period heat-shift between earth that is close to the ground loop and heat-exchange fluid.When heat-exchange fluid is cycling through ground when returning heat exchange unit after the loop, the temperature contrast of heat exchange unit utilization between heat-exchange fluid that is fed to the ground loop and the heat-exchange fluid that returns from the ground loop is to produce the air that heats or the air of refrigeration.The air of this heating or the air of refrigeration are pumped in the inside of building structure then to control its climate inside.
Can use various ground loop configuration with geothermal heat pump system.For " closed loop " configuration, wherein loop is provided for the closed-loop path of cycling hot replacement fluids, adopts two kinds of known configurations usually, promptly horizontal closed loop configurations and vertical closed loop configurations.In horizontal closed loop configurations, typically be flatly to lay the ground loop in the shallow ridges that vicinity excavates in will the soil by the building structure of geothermal heat pump system service.In vertical closed loop configurations, that the ground loop typically is positioned in is that vicinity forms in will the soil by the building structure of geothermal heat pump system service, in 100 feet to 400 feet dark wells.
Various geothermal heat pump systems have been considered.The U.S. Patent No. 5,533,356 of for example authorizing DeMasters discloses a kind of underfloor duct system that is used for earth source heat pump.Described underfloor duct system is included in building one side and is embedded in conduit loop in the earth.At least one alar part spare is installed on the conduit loop to contact the soil and to stop moving upward of conduit loop.
The U.S. Patent No. 5,339,890 of authorizing Rawlings discloses a kind of earth-source hot-pump system that comprises by the underground utilities equipment of a plurality of modularization heat exchange unit structures.Described underground utilities equipment is embedded in a side of building structure.
As will be appreciated, owing to need to excavate arduously around the garden of building structure so that the ground loop to be installed, in case building structure is configured, it just can be expensive that the geothermal heat pump system that is used to serve this building structure is installed.Can not obtain enough land or courtyard space with the situation of holding the ground loop in, need to make other unconventional device so that the ground loop to be installed, this may require complicated and expensive excavation, thereby has increased the cost of geothermal heat pump system.As a result, exist for have low installation cost and with the fabric structure of the courtyard space of the associated limit demand of compatible geothermal heat pump system mutually.
Therefore the object of the present invention is to provide the method in conjunction with the ground loop of the installation geothermal heat pump system of the building structure of described geothermal heat pump system and a kind of novelty of a kind of geothermal heat pump system of novelty, a kind of novelty.
Summary of the invention
In view of the above, in one aspect, provide a kind of geothermal heat pump system, comprising: at least one heat exchange unit; With the ground loop, described ground loop is communicated with described at least one heat exchange unit fluid, and described ground loop has: the feeding part, and described at least one heat exchange unit is transported to heat-exchange fluid in the described feeding part; And discharge unit, the heat-exchange fluid that has circulated returns described at least one heat exchange unit via described discharge unit, described ground loop comprises at least one fluid circuit that is formed by pipeline, and described pipeline is arranged to be limited under the sole plate of building structure and is embedded in spaced vertical coils in the earth, a plurality of.
In one embodiment, described vertical coil is connected in series and is arranged at least in the delegation.Described vertical coil can also be evenly spaced apart substantially.
In another embodiment, described ground loop comprises a plurality of fluid circuits, and each fluid circuit comprises a plurality of spaced vertical coil that is connected in series.The vertical coil of each fluid circuit is arranged at least in the delegation and is evenly spaced apart substantially.
In yet another embodiment, described ground loop further comprises the helical pipe that twines around the base wall of building structure.
According on the other hand, a kind of method that the ground loop of geothermal heat pump system is installed is provided, comprising: mining clay is to produce the footing excavation cave; In the footing excavation cave, excavate a plurality of spaced, vertical substantially holes; The pipeline coil is inserted in each hole, and described coil is connected in series; On coil, carry out backfill; With on backfill, lay sole plate.
In one embodiment, the ground loop part is twined around base wall.Winding can carried out before the structure foundation wall or after the structure foundation wall.
According to another aspect, a kind of ground loop that is used for geothermal heat pump system is provided, comprising: the feeding part, at least one heat exchange unit is transported to heat-exchange fluid in the described feeding part; Discharge unit, described discharge unit make the heat-exchange fluid that has circulated return described at least one heat exchange unit; With at least one fluid circuit, described at least one fluid circuit is formed by pipeline, and described pipeline is arranged to be limited under the sole plate of building structure and is embedded in spaced vertical coils in the earth, a plurality of.
Description of drawings
Referring now to accompanying drawing embodiment is described more fully, wherein:
Fig. 1 is the cross sectional view by the building structure of geothermal heat pump system service;
Another cross sectional view of the building structure of Fig. 1 that Fig. 2 partly dissects is at geothermal heat pump system shown in the plane, top;
Fig. 3 is the cross sectional view that is similar to Fig. 2, and another embodiment of geothermal heat pump system is shown;
Fig. 4 is the cross sectional view that is similar to Fig. 2, and the another embodiment of geothermal heat pump system is shown;
Fig. 5 is the cross sectional view by the building structure of the another embodiment service of geothermal heat pump system;
Fig. 6 is another cross sectional view of the building structure of Fig. 5 of partly dissecing, at geothermal heat pump system shown in the plane, top;
Fig. 7 is the cross sectional view by the building structure of the another embodiment service of geothermal heat pump system;
Fig. 8 is another cross sectional view of the building structure of Fig. 7 of partly dissecing, at geothermal heat pump system shown in the plane, top;
Fig. 9 is the cross sectional view that is similar to Fig. 8, and the another embodiment of geothermal heat pump system is shown;
Figure 10 is the cross sectional view that is similar to Fig. 8, and the another embodiment of geothermal heat pump system is shown;
Figure 11 is the cross sectional view by the building structure of the another embodiment service of geothermal heat pump system;
Figure 12 is another cross sectional view of the building structure of Figure 11 of partly dissecing, at geothermal heat pump system shown in the plane, top;
Figure 13 is the cross sectional view by the building structure of the another embodiment service of geothermal heat pump system;
Figure 14 is another cross sectional view of the building structure of Figure 13 of partly dissecing, at geothermal heat pump system shown in the plane, top;
Figure 15 is the cross sectional view by the building structure of the service of an embodiment again of geothermal heat pump system; And
Figure 16 is another cross sectional view of the building structure of Figure 15 of partly dissecing, at geothermal heat pump system shown in the plane, top.
The specific embodiment
Below explanation relates to a kind of geothermal heat pump system, described geothermal heat pump system be included in building structure etc. sole plate under be inserted into ground loop in the earth.After finishing footing excavation but before structure foundation, and more specifically before laying sole plate, the ground loop is inserted in the earth.This structure is utilized as the excavated cavity that carry out on the basis in proper order, and has therefore avoided for the significant needs that further excavate that are used for the ground loop, and this has reduced the installation cost of geothermal heat pump system.Described ground loop comprises a plurality of spaced vertical substantially coils, can easily excavate and arrange the hole that is used for described coil during erection stage.Because vertically the aspect ratio of coil such as their number, twine density and relevant with the amount of the heat that between earth and the heat-exchange fluid that in the ground loop, circulates, transmits at interval, so use the coil of this layout that a kind of plain mode of controlling amount of heat transfer is provided, thereby allow the designing requirement of the geothermal heat pump system of Different Individual to be satisfied.Now will be specifically referring to figs. 1 to the 16 various embodiment that describe geothermal heat pump system.
Turn to Fig. 1 and 2 now, a kind of geothermal heat pump system shown in the figure, and described geothermal heat pump system totally utilizes Reference numeral 20 expressions.In this example, geothermal heat pump system 20 is building structure 50 services of house form.It will be understood to those of skill in the art that building structure 50 is not must be dwelling house, and in fact can be actually any building structure that its climate inside need be controlled.Geothermal heat pump system 20 comprises heat exchange unit 24 and the ground loop 26 that is communicated with heat exchange unit 24 fluids.Heat exchange unit 24 is arranged in the basement 52 of building structure 50 and places on the sole plate 54 of building structure 50.Ground loop 26 is embedded in the earth 28 under sole plate 54.Heat-exchange fluid is by heat exchange unit 24 and 26 circulations of ground loop.Heat-exchange fluid can be any suitable heat exchange medium and be water/ethylene glycol mixture in this embodiment.
In this embodiment, ground loop 26 is formed by high-density polytene pipeline, described pipeline is arranged to form the single fluid loop, makes that being fed into heat-exchange fluid in the ground loop 26 by heat exchange unit 24 followed serial path by pipeline before returning heat exchange unit.For this reason, ground loop 26 comprises: feed conduit 30, the heat-exchange fluid that feed conduit 30 receives by heat exchange unit 24 dischargings; Discharge tube 32, discharge tube 32 make the heat-exchange fluid that cycles through ground loop 26 return heat exchange unit 24; With a plurality of substantially equally isolated vertical coils 34, have five (5) individual coils in this embodiment, described a plurality of vertical coils 34 are connected in series, and are arranged in the row of feed conduit 30 and discharge tube 32 centres.Each vertical coil 34 has the identical diameter and the identical number of turn substantially in this embodiment.The total length that utilizes vertical coil 34 to make it possible to increase ground loop 26 reduces the ground loop 26 needed excavation amounts of installing simultaneously.
In operation, heat exchange unit 24 is carried heat-exchange fluid to the feed conduit 30 of ground loop 26.The heat-exchange fluid that enters feed conduit 30 flowed through the pipeline that sequentially passes through each vertical coil 34 before returning heat exchange unit 24 via discharge tube 32.Between heat-exchange fluid was by ground loop 26 flow periods, heat transmitted between earth 28 that centers on ground loop 26 and heat-exchange fluid.Be fed into by heat exchange unit 24 ground in the loop 26 heat-exchange fluid and the temperature contrast of returning from ground loop 26 between the heat-exchange fluid of heat exchange unit 24 produce the hot activation force of using by heat exchange unit 24.Specifically, heat exchange unit 24 comprises the second internal loop (not shown) that comprises cold-producing medium.Hot activation force is utilized to drive cold-producing medium by vapor-compression refrigerant cycle by heat exchange unit 24, knows ground as those skilled in the art, and described vapor-compression refrigerant cycle is used to produce through the air of heating or the air of refrigeration then.The air of this heating or the air of refrigeration are pumped in the inside of building structure 50 to be controlled at the climate inside in the building structure 50 by heat exchange unit 24 then.
During geothermal heat pump system 20 is installed, after the soil on the basis that is used for building structure 50 has been excavated, in earth, formed the vertical hole that size is suitable for holding vertical coil 34.Because each vertical coil 34 has identical diameter substantially, so can be easy to use single tommy bar or other suitable digging tool to form hole.In case hole is formed, each vertical coil 34 just is located in the corresponding perforations.Vertically coil 34 is utilized earth 28 to cover vertical coil by backfill then thus.In case finished suitable backfill amount, sole plate 54 just is layed on the remainder of earth 28 and base configuration.Pass through the feed conduit 30 and the discharge tube 32 of a feeding ground loop 26 in the base wall 56 then, and place backfills around base wall 56.As will be appreciated, this structure has utilized the basic needed excavation of structure building structure 50 in proper order, thereby has eliminated the requirement of the independent excavation that is used for ground loop 26.Because ground loop 26 be positioned at building structure 50 sole plate 54 under, so for for the use of building structure associated limit or that do not have any courtyard space, geothermal heat pump system 20 is compatible.
As will be appreciated, the effectiveness and the efficient of several factors decision geothermal heat pump system 20.For example, amount, the efficient of heat exchange unit 24 and the size and the energy efficiency of building structure 50 of the heat that transmits between earth 28 that centers on ground loop 26 and the heat-exchange fluid by 26 circulations of ground loop are all made contributions for the effectiveness and the efficient of geothermal heat pump system 20.About first factor, around the amount of the heat that transmits between the earth 28 of ground loop 26 and the heat-exchange fluid that flows by ground loop 26 itself by many different factors decisions, include, but are not limited to the soil characteristic of average seasonal temperature, the mean temperature difference between the air above earth 28 and the ground surface 28a, earth of earth 28 and underground water content and the configuration of loop 26.Therefore, and as will be appreciated, the configuration of ground loop 26 such as the total length of ground loop 26, vertically coil 34 the degree of depth, vertically coil twine density, vertically coil 34 the lateral separation and vertically the number of coil 34 influence the efficient of geothermal heat pump system 20.According to environment, install for given geothermal heat pump system, can change in these configuration parameters one or more to be fit to concrete needs.
Fig. 3 is depicted as the geothermal heat pump system 120 of the alternate embodiment of building structure 50 services.In this embodiment, be similar to former embodiment, ground loop 126 is formed by high-density polytene pipeline, described pipeline is arranged to form the single fluid loop, makes that being fed into heat-exchange fluid in the ground loop 126 by heat exchange unit 124 followed serial path by pipeline before returning heat exchange unit.Ground loop 126 comprises: feed conduit 130, the heat-exchange fluid that feed conduit 130 receives by heat exchange unit 124 dischargings; Discharge tube 132, discharge tube 132 make the heat-exchange fluid that cycles through ground loop 126 return heat exchange unit 124; With a plurality of substantially equally isolated vertical coils 134, described a plurality of vertical coils 134 are connected in series, and are arranged in two substantially parallel row.Vertically each row of coil 134 comprises five (5) individual coils.Be similar to former embodiment, each vertical coil 134 has the identical diameter and the identical number of turn substantially.
Shown in Figure 4 is the geothermal heat pump system 220 of the another embodiment of building structure 50 services.In this embodiment, be similar to former embodiment, ground loop 226 is formed by high-density polytene pipeline.Yet do not resemble former embodiment, pipeline is arranged to form pair of parallel fluid circuit 229a and 229b, and each fluid circuit all is communicated with heat exchange unit 224.Each fluid circuit comprises: feed conduit 230, the heat-exchange fluid that feed conduit 230 receives by heat exchange unit 224 dischargings; Discharge tube 232, discharge tube 232 make the heat-exchange fluid of the pipeline that cycles through fluid circuit return heat exchange unit 224; With a plurality of substantially equally isolated vertical coils 234, have five (5) individual coils in this embodiment, described a plurality of vertical coils 234 are connected in series, and arrange and embark on journey.Each vertical coil 234 has the identical diameter and the identical number of turn substantially in this embodiment.The two row vertical coils 234 of fluid circuit 229a and 229b are substantially parallel.Use the parallel fluid loop of two separation the total length that increases to be provided and to have allowed each fluid circuit to be operated individually as ground loop 226.Therefore, for example when only needing the small amount of thermal transmission to control the weather of building structure 50,, only need to be used for the cycling hot replacement fluids with one in the fluid circuit such as in the weather of gentleness.
Fig. 5 and 6 is depicted as the geothermal heat pump system 320 of an embodiment again of building structure 350 service of house form.Geothermal heat pump system 320 comprises heat exchange unit 324 and the ground loop 326 that is communicated with heat exchange unit 324 fluids.Heat exchange unit 324 is arranged in the basement 352 of building structure 350 and places on the sole plate 354 of building structure 350.The heat-exchange fluid that ground loop 326 receives by heat exchange unit 324 dischargings, and after heat-exchange fluid has cycled through ground loop 326, make heat-exchange fluid return heat exchange unit 324.
Be similar to former embodiment, ground loop 326 is formed by high-density polytene pipeline.Ground loop 326 is arranged to form the single fluid loop, makes that being fed into heat-exchange fluid in the ground loop 326 by heat exchange unit 324 followed serial path by pipeline before returning heat exchange unit 324.In this embodiment, ground loop 326 comprises: feed conduit 330, the heat-exchange fluid that feed conduit 330 receives by heat exchange unit 324 dischargings; Discharge tube 332, discharge tube 332 make the heat-exchange fluid that cycles through ground loop 326 return heat exchange unit 324; Be couple to the spiral winding 340 of feed conduit 320, spiral winding 340 is embedded in the earth 328 below frost line 342, and twines around the base wall 356 of building structure 350; Be couple to the spiral winding 344 of discharge tube 332, spiral winding 344 is embedded in the earth 328 below frost line 342, and twines around base wall 356; With a plurality of substantially equally isolated vertical coils 334, described a plurality of vertical coils 334 are connected in series, and are arranged in spiral winding 340 and the 344 interconnective row.Each vertical coil 334 has the identical diameter and the identical number of turn substantially.Spiral winding 340 and 344 makes that the length of ground loop 326 can be prolonged, and makes any heat that transmits between earth 328 that centers on base wall 356 and the heat-exchange fluid by 226 circulations of ground loop to make contributions for the overall thermal transmission.In a kind of sight, with before embodiment when comparing, the length of ground loop 326 can be held constant, and spiral winding 340 and 344 use as a result allow to reduce the number of vertical coil 334, therefore reduces the vertical coil 334 needed excavation amounts of installing.
Can be in one or more stage the installation of place of execution loop 326.Install for single stage, footing excavation after but lay sole plate 354 and structure foundation wall 356 install before the two loop 326.In other words, before laying sole plate 354 and before building base wall 356, in earth 328, install vertical coil 334 and spiral winding 340 and 344 the two.Alternately, for the multistage installation, vertically coil 334 at first is inserted in the hole that forms in the earth 328, and proceeds the structure on basis, thereby sole plate 354 is laid and base wall 356 is built.In case base wall is built, spiral winding 340 and 344 is just installed.
If desired, spiral winding 340 and 344 can form independent fluid circuit in parallel with vertical coil 334 rather than that be connected in series with vertical coil.
Fig. 7 and 8 illustrates totally the another embodiment by the geothermal heat pump system of Reference numeral 420 expressions.In this example, geothermal heat pump system 420 is building structure 450 services of commercial establishment form.It will be understood to those of skill in the art that building structure 450 is not must be commercial establishment, and in fact can be actually any building structure that its climate inside need be controlled.Geothermal heat pump system 420 comprises heat exchange unit 424 and the ground loop 426 that is communicated with heat exchange unit 424 fluids.Heat exchange unit 424 is arranged in building structure 450 and places on the sole plate 454, and sole plate 454 is ground panels (slab on grade) in this case.Base wall 456 is down extended under sole plate 454, and is supported by footing 458.Ground loop 426 is embedded in the earth 428 under sole plate 454.Heat-exchange fluid cycles through heat exchange unit 424 and ground loop 426.Heat-exchange fluid can be any suitable heat exchange medium and be water/ethylene glycol mixture in this embodiment.
Be similar to former embodiment, ground loop 426 is formed by high-density polytene pipeline, described pipeline is arranged to form the single fluid loop, makes that being fed into heat-exchange fluid in the ground loop 426 by heat exchange unit 424 followed serial path by pipeline before returning heat exchange unit.For this reason, ground loop 426 comprises: feed conduit 430, the heat-exchange fluid that feed conduit 430 receives by heat exchange unit 424 dischargings; Discharge tube 432, discharge tube 432 make the heat-exchange fluid that cycles through ground loop 426 return heat exchange unit 424; With a plurality of substantially equally isolated vertical coils 434, have five (5) individual coils in this embodiment, described a plurality of vertical coils 434 are connected in series, and are arranged in the row of feed conduit 430 and discharge tube 432 centres.Each vertical coil 434 has the identical diameter and the identical number of turn substantially in this embodiment.
During geothermal heat pump system 420 is installed, excavated in the soil on the basis that is used for building structure 450 and after base wall 456 has been configured, in earth, formed the vertical hole that size is suitable for holding vertical coil 434.Because each vertical coil 434 has identical diameter substantially, so can be easy to use single tommy bar or other suitable digging tool to form hole.Hole extends below the bottom of base wall 456 and the footing that is associated.In case hole is formed, each vertical coil 434 just is located in the corresponding perforations, and feed conduit 430 and discharge tube 432 are positioned at top, sole plate position and extend.Space between base wall 456 utilizes earth 428 to cover vertical coil 434 then by backfill thus.In case finished suitable backfill amount, sole plate 454 just is layed on the earth 428 at the horizontal 428a of ground surface place, and the remainder of building structure 450 is constructed.The feed conduit 430 and the discharging and 432 that extend through the ground loop 426 of sole plate 454 then are connected respectively to heat exchange unit 424.As will be appreciated, this structure has utilized the basic needed excavation of structure building structure 450 in proper order, thereby has eliminated the requirement of the independent excavation that is used for ground loop 426.Because ground loop 426 be positioned at building structure 450 sole plate 454 under, so for for the use of building structure associated limit or that do not have any courtyard space, geothermal heat pump system 420 is compatible.
Fig. 9 is depicted as the geothermal heat pump system 520 of the alternate embodiment of building structure 450 services.In this embodiment, be similar to former embodiment, ground loop 526 is formed by high-density polytene pipeline, described pipeline is arranged to form the single fluid loop, makes that being fed into heat-exchange fluid in the ground loop 526 by heat exchange unit 524 followed serial path by pipeline before returning heat exchange unit.Ground loop 526 comprises: feed conduit 530, the heat-exchange fluid that feed conduit 530 receives by heat exchange unit 524 dischargings; Discharge tube 532, discharge tube 532 make the heat-exchange fluid that cycles through ground loop 526 return heat exchange unit 524; With a plurality of substantially equally isolated vertical coils 534, described a plurality of vertical coils 534 are connected in series, and are arranged in two substantially parallel row.Vertically each row of coil 534 comprises five (5) individual coils.Be similar to former embodiment, each vertical coil 534 has the identical diameter and the identical number of turn substantially.
Shown in Figure 10 is the geothermal heat pump system 620 of the another embodiment of building structure 450 services.In this embodiment, be similar to former embodiment, ground loop 626 is formed by high-density polytene pipeline.Pipeline is arranged to form pair of parallel fluid circuit 629a and 629b, and each fluid circuit all is communicated with heat exchange unit 624.Each fluid circuit comprises: feed conduit 630, the heat-exchange fluid that feed conduit 630 receives by heat exchange unit 624 dischargings; Discharge tube 632, discharge tube 632 make the heat-exchange fluid of the pipeline that cycles through fluid circuit return heat exchange unit 624; With a plurality of substantially equally isolated vertical coils 634, have five (5) individual coils in this embodiment, described a plurality of vertical coils 634 are connected in series, and arrange and embark on journey.Each vertical coil 634 has the identical diameter and the identical number of turn substantially in this embodiment.The two row vertical coils 634 of fluid circuit 629a and 629b are substantially parallel.Use the parallel fluid loop of two separation the total length that increases to be provided and to have allowed each fluid circuit to be operated individually as ground loop 626.Therefore, for example when only needing the small amount of thermal transmission to control the weather of building structure 450,, only need to be used for the cycling hot replacement fluids with one in the fluid circuit such as in the weather of gentleness.
Figure 11 and 12 is depicted as the geothermal heat pump system 720 of an embodiment again of building structure 750 services.Geothermal heat pump system 720 comprises heat exchange unit 724 and the ground loop 726 that is communicated with heat exchange unit 724 fluids.Heat exchange unit 724 is arranged in building structure 750 and places on the sole plate 754 of building structure 750, and sole plate 754 is ground panels.The heat-exchange fluid that ground loop 726 receives by heat exchange unit 724 dischargings, and after heat-exchange fluid has cycled through ground loop 726, make heat-exchange fluid return heat exchange unit 724.
Be similar to former embodiment, ground loop 726 is formed by high-density polytene pipeline.Ground loop 726 is arranged to form the single fluid loop, makes that being fed into heat-exchange fluid in the ground loop 726 by heat exchange unit 724 followed serial path by pipeline before returning heat exchange unit 724.In this embodiment, ground loop 726 comprises: feed conduit 730, the heat-exchange fluid that feed conduit 730 receives by heat exchange unit 724 dischargings; Discharge tube 732, discharge tube 732 make the heat-exchange fluid that cycles through ground loop 726 return heat exchange unit 724; Be couple to the spiral winding 740 of feed conduit 730, spiral winding 740 is embedded in the earth 728 below frost line 742, and centers on the outside winding of the base wall 756 of building structure 750; With a plurality of substantially equally isolated vertical coils 734, described a plurality of vertical coils 734 are connected in series, and arrange and embark on journey.Each vertical coil 734 has the identical diameter and the identical number of turn substantially.Spiral winding 740 makes that the length of ground loop 726 can be prolonged, and makes any heat that transmits between earth 728 that centers on base wall 756 and the heat-exchange fluid by 726 circulations of ground loop to make contributions for the overall thermal transmission.In a kind of sight, when comparing with the embodiment of Fig. 7 to 10, it is constant that the length of ground loop 726 can be held, and the use of spiral winding 740 as a result allows to reduce the number of vertical coil 734, the therefore vertical coil 734 needed excavation amounts of minimizing installation.
Can be in one or more stage the installation of place of execution loop 726.For single stage installation, ground loop 726 is installed after footing excavation but before structure foundation wall 756.In other words, before building base wall 756, in earth 728, install vertical coil 734 and spiral winding 740 the two.Alternately, install for the multistage, vertically coil 734 at first is inserted in the hole that forms in the earth 728, and proceeds the structure on basis, thus base wall constructed, the space between base wall is by backfill, and lays sole plate 754.In case the basis is constructed, spiral winding 740 is just installed.It will be understood to those of skill in the art that other other alternative erection sequence is possible.
If desired, spiral winding 740 can form independent fluid circuit in parallel with vertical coil 734 rather than that be connected in series with vertical coil.
In the embodiment of Figure 11 and 12, the spiral winding twines around the outside of base wall.Alternatively, can be in the inside of base wall the winding screw winding.For example, Figure 13 and 14 is depicted as the geothermal heat pump system 820 of an embodiment again of building structure 850 services.Geothermal heat pump system 820 comprises heat exchange unit 824 and the ground loop 826 that is communicated with heat exchange unit 824 fluids.Heat exchange unit 824 is arranged in building structure 850 and places on the sole plate 854, and sole plate 854 is ground panels.Ground loop 826 receives by the heat-exchange fluid of heat exchange unit 824 dischargings and after heat-exchange fluid has cycled through ground loop 826 and makes heat-exchange fluid return heat exchange unit 824.
Be similar to former embodiment, ground loop 826 is formed by high-density polytene pipeline.Ground loop 826 is arranged to form the single fluid loop, makes that being fed into heat-exchange fluid in the ground loop 826 by heat exchange unit 824 followed serial path by pipeline before returning heat exchange unit.In this embodiment, ground loop 826 comprises: feed conduit 830, the heat-exchange fluid that feed conduit 830 receives by heat exchange unit 824 dischargings; Discharge tube 832, discharge tube 832 make the heat-exchange fluid that cycles through ground loop 826 return heat exchange unit 824; Be couple to the spiral winding 844 of feed conduit 830, spiral winding 844 is embedded in the earth 828 and twines in the inside of the base wall 856 of building structure 850; With a plurality of substantially equally isolated vertical coils 834, described a plurality of vertical coils 834 are connected in series, and arrange and embark on journey.
Can be in one or more stage the installation of place of execution loop 826.For single stage installation, ground loop 826 is installed after footing excavation and structure foundation wall 856.In other words, therefore in earth 828, install before the backfill and before laying sole plate 854 vertical coil 834 and spiral winding 844 the two.Alternately, for the multistage installation, vertically coil 834 at first is inserted in the hole that forms in the earth 828, and base wall 856 is constructed then.In case base wall is built, spiral winding 844 just installed and the space between base wall 856 by backfill.It will be understood to those of skill in the art that other other alternative erection sequence is possible.
Figure 15 and 16 is depicted as the geothermal heat pump system 920 of an embodiment again of building structure 950 services.Geothermal heat pump system 920 comprises heat exchange unit 924 and the ground loop 926 that is communicated with heat exchange unit 924 fluids.Heat exchange unit 924 is arranged in building structure 950 and places on the sole plate 954, and sole plate 954 is ground panels.The heat-exchange fluid that ground loop 926 receives by heat exchange unit 924 dischargings, and after heat-exchange fluid has cycled through ground loop 926, make heat-exchange fluid return heat exchange unit 924.
Be similar to former embodiment, ground loop 926 is formed by high-density polytene pipeline.Ground loop 926 is arranged to form the single fluid loop, makes that being fed into heat-exchange fluid in the ground loop 926 by heat exchange unit 924 followed serial path by pipeline before returning heat exchange unit 924.In this embodiment, ground loop 926 comprises: feed conduit 930, the heat-exchange fluid that feed conduit 930 receives by heat exchange unit 924 dischargings; Discharge tube 932, discharge tube 932 make the heat-exchange fluid that cycles through ground loop 926 return heat exchange unit 924; Be couple to the spiral winding 940 of feed conduit 930, spiral winding 940 is embedded in the earth 928 below frost line 942, and centers on the outside winding of the base wall 956 of building structure 950; Be couple to the spiral winding 944 of feed conduit 930, spiral winding 944 is embedded in the earth 928 and twines in the inside of the base wall 956 of building structure 950; With a plurality of substantially equally isolated vertical coils 934, described a plurality of vertical coils 934 are connected in series, and arrange and embark on journey.
Can be in one or more stage the installation of place of execution loop 926.For single stage installation, ground loop 926 is installed after footing excavation and structure foundation wall 956.In other words, before the backfill and before therefore laying sole plate 954 vertical coil 934 and spiral winding 940 and 944 are being installed in earth 928.Alternately, for the multistage installation, vertically coil 934 at first is inserted in the hole that forms in the earth 928, and spiral winding 940 is installed, and base wall 956 is constructed then.In case base wall is built, internal helicoid winding 944 is just installed.It will be understood to those of skill in the art that other other alternative erection sequence is possible.
The pipeline of each fluid circuit can comprise the pipeline of a single body length, perhaps alternatively can comprise two or the interconnective duct section of multiple-length more.
Though heat-exchange fluid is described as water/ethylene glycol mixture in the above, heat-exchange fluid can be any suitable material or material.Alternatively, this system can be direct exchange (DX) heat pump, and wherein loop is configured to make cold-producing medium to pass through its circulation.
In the above-described embodiments, the vertical coil of each fluid circuit is described and is illustrated as to have substantially identical diameter and has the identical number of turn.It will be understood to those of skill in the art that fluid circuit can comprise the vertical coil with different size.And the interval between adjacent vertical coil and the number of the vertical coil in each fluid circuit can change.
Though embodiment has been described with reference to the drawings in the above, it will be understood to those of skill in the art that under the prerequisite that does not depart from as its spirit and scope of being defined by the following claims, can make and change and revise.
Claims (22)
1. geothermal heat pump system comprises:
At least one heat exchange unit; With
The ground loop, described ground loop is communicated with described at least one heat exchange unit fluid, and described ground loop has: the feeding part, described at least one heat exchange unit is transported to heat-exchange fluid in the described feeding part; And discharge unit, the heat-exchange fluid that has circulated returns described at least one heat exchange unit via described discharge unit, described ground loop comprises at least one fluid circuit that is formed by pipeline, and described pipeline is arranged to be limited under the sole plate of building structure and is embedded in spaced vertical coils in the earth, a plurality of.
2. according to the heat pump of claim 1, wherein said vertical coil is connected in series.
3. according to the heat pump of claim 2, wherein said vertical coil is arranged at least in the delegation.
4. according to the heat pump of claim 2 or 3, wherein said vertical curve cycle basis originally is evenly spaced apart.
5. according to the heat pump of claim 1, wherein said ground loop comprises a plurality of fluid circuits, and each fluid circuit comprises a plurality of spaced vertical coil that is connected in series.
6. according to the heat pump of claim 5, wherein the vertical coil of each fluid circuit is arranged at least in the delegation.
7. according to the heat pump of claim 5 or 6, wherein the vertical curve cycle basis of each fluid circuit originally is evenly spaced apart.
8. according to each the heat pump in the claim 1 to 7, wherein each described vertical curve cycle basis originally has identical diameter.
9. according to each the heat pump in the claim 1 to 8, wherein each described vertical curve cycle basis originally has the identical number of turn.
10. according to each the heat pump in the claim 1 to 9, wherein said ground loop further comprises the helical pipe that twines around the base wall of described building structure.
11. according to the heat pump of claim 10, wherein said helical pipe is connected with described vertical coil.
12. according to the heat pump of claim 11, at least one of the centre of wherein said helical pipe in described feeding part and described vertical coil and described vertical coil and described discharge unit.
13. according to each the heat pump in the claim 1 to 12, wherein said sole plate is the ground panel.
14. according to each the heat pump in the claim 1 to 13, wherein said heat exchange unit comprises heat pump.
15. a building structure, comprise have around the basis of the base wall of sole plate and be used for controlling wherein weather, according to each heat pump of claim 1 to 14.
16. the method that the ground loop of geothermal heat pump system is installed comprises:
Mining clay is to produce the footing excavation cave;
In described footing excavation cave, excavate a plurality of spaced, vertical substantially holes;
The pipeline coil is inserted in each hole, and described coil is connected in series;
On described coil, carry out backfill; With
On backfill, lay sole plate.
17., further comprise a part of twining described ground loop around base wall according to the method for claim 16.
18., wherein before the described base wall of structure, carry out described winding according to the method for claim 17.
19., wherein after the described base wall of structure, carry out described winding according to the method for claim 17.
20. according to each the method in the claim 16 to 19, wherein said base plate is the ground panel.
21. a ground loop that is used for geothermal heat pump system comprises:
The feeding part, at least one heat exchange unit is transported to heat-exchange fluid in the described feeding part;
Discharge unit, described discharge unit make the heat-exchange fluid that has circulated return described at least one heat exchange unit; With
At least one fluid circuit, described at least one fluid circuit is formed by pipeline, and described pipeline is arranged to be limited under the sole plate of building structure and is embedded in spaced vertical coils in the earth, a plurality of.
22. according to the ground loop of claim 21, wherein said sole plate is the ground panel.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US17949709P | 2009-05-19 | 2009-05-19 | |
| US61/179,497 | 2009-05-19 | ||
| US30438810P | 2010-02-16 | 2010-02-16 | |
| US61/304,388 | 2010-02-16 |
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| Publication Number | Publication Date |
|---|---|
| CN101922824A true CN101922824A (en) | 2010-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101863344A Pending CN101922824A (en) | 2009-05-19 | 2010-05-19 | Geothermal heat pump system |
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| Country | Link |
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| CN (1) | CN101922824A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0189733A1 (en) * | 1985-02-01 | 1986-08-06 | Leo Gut | Heat pump installation for heat extraction from the ground |
| US20070151704A1 (en) * | 2006-01-04 | 2007-07-05 | Elmore Gregory A | Geothermal heat exchange system |
| CN101086432A (en) * | 2007-07-31 | 2007-12-12 | 任丙辉 | Deep burying chamber type heat exchanger |
| CN101421564A (en) * | 2006-03-16 | 2009-04-29 | 马泰夫公司 | System and distribution tank for low-energy network |
-
2010
- 2010-05-19 CN CN2010101863344A patent/CN101922824A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0189733A1 (en) * | 1985-02-01 | 1986-08-06 | Leo Gut | Heat pump installation for heat extraction from the ground |
| US20070151704A1 (en) * | 2006-01-04 | 2007-07-05 | Elmore Gregory A | Geothermal heat exchange system |
| CN101421564A (en) * | 2006-03-16 | 2009-04-29 | 马泰夫公司 | System and distribution tank for low-energy network |
| CN101086432A (en) * | 2007-07-31 | 2007-12-12 | 任丙辉 | Deep burying chamber type heat exchanger |
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Application publication date: 20101222 |